NM_032119.4:c.18754G>A

Variant names:

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_032119.4(ADGRV1):c.18754G>A(p.Asp6252Asn) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000298 in 1,611,832 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.00016 ( 0 hom., cov: 33)

Exomes 𝑓: 0.00031 ( 0 hom. )

Consequence

ADGRV1
NM_032119.4 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:7B:1

Conservation

PhyloP100: 9.00

Variant links:

Genes affected

ADGRV1 (HGNC:17416): (adhesion G protein-coupled receptor V1) This gene encodes a member of the G-protein coupled receptor superfamily. The encoded protein contains a 7-transmembrane receptor domain, binds calcium and is expressed in the central nervous system. Mutations in this gene are associated with Usher syndrome 2 and familial febrile seizures. Several alternatively spliced transcripts have been described. [provided by RefSeq, Jul 2008]

ADGRV1 links:

LUCAT1 (HGNC:48498): (lung cancer associated transcript 1)

LUCAT1 links:

LOC107986432 (HGNC:):

LOC107986432 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ADGRV1	NM_032119.4 link	c.18754G>A	p.Asp6252Asn	missense_variant	Exon 89 of 90	ENST00000405460.9	NP_115495.3	Q8WXG9-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
ADGRV1	ENST00000405460.9 link	c.18754G>A	p.Asp6252Asn	missense_variant	Exon 89 of 90	1	NM_032119.4	ENSP00000384582.2		Q8WXG9-1

Frequencies

GnomAD3 genomes

AF:

0.000158

AC:

AN:

152188

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000965

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000131

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000193

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000235

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000114

AC:

AN:

246360

Hom.:

AF XY:

0.000127

AC XY:

AN XY:

133636

show subpopulations

Gnomad AFR exome

AF:

0.000266

Gnomad AMR exome

AF:

0.0000589

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000112

Gnomad SAS exome

AF:

0.0000332

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000170

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000313

AC:

457

AN:

1459644

Hom.:

Cov.:

AF XY:

0.000306

AC XY:

222

AN XY:

725974

show subpopulations

Gnomad4 AFR exome

AF:

0.000180

Gnomad4 AMR exome

AF:

0.0000451

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.000706

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.000372

Gnomad4 OTH exome

AF:

0.000133

GnomAD4 genome

AF:

0.000158

AC:

AN:

152188

Hom.:

Cov.:

AF XY:

0.000161

AC XY:

AN XY:

74340

show subpopulations

Gnomad4 AFR

AF:

0.0000965

Gnomad4 AMR

AF:

0.000131

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.000193

Gnomad4 SAS

AF:

0.000207

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000235

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000281

Hom.:

Bravo

AF:

0.000151

TwinsUK

AF:

0.000270

AC:

ALSPAC

AF:

0.00

AC:

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000244

AC:

ExAC

AF:

0.000108

AC:

Asia WGS

AF:

0.000577

AC:

AN:

3478

EpiCase

AF:

0.000165

EpiControl

AF:

0.000239

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:7Benign:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not provided

Uncertain:2Benign:1

Sep 29, 2017

ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The p.Asp6252Asn variant (rs201800819) has not been reported in the medical literature, is absent from ClinVar, and has not been previously identified in our laboratory. The p.Asp6252Asn variant is listed in the Genome Aggregation Database (gnomAD) browser with an overall allele frequency of 0.011% (identified in 31 out of 274,368 chromosomes). The aspartic acid at codon 6,252 is moderately conserved considering 12 species (Alamut software v2.10.0), and computational analyses suggest that this variant does affect the structure/function of the ADGRV1 protein (SIFT: damaging, PolyPhen2: possibly damaging, MutationTaster: disease causing). However, based on the available information, the clinical significance of the p.Asp6252Asn variant cannot be determined with certainty. -

Jan 08, 2025

GeneDx

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Identified in a patient with autism in published literature; has not been published in association with an ADGRV1-related disorder to our knowledge (PMID: 35982159); In silico analysis indicates that this missense variant does not alter protein structure/function; In silico analysis is inconclusive as to whether the variant alters gene splicing. In the absence of RNA/functional studies, the actual effect of this sequence change is unknown.; This variant is associated with the following publications: (PMID: 35982159) -

Jan 29, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

not specified

Uncertain:1

Nov 17, 2016

Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The p.Asp6252Asn variant in GPR98 has not been previously reported in individual s with hearing loss or Usher syndrome. This variant has been identified in seve ral populations by the Exome Aggregation Consortium, including 8/61548 European chromosomes (ExAC, http://exac.broadinstitute.org; dbSNP rs201800819); however, its frequency is not high enough to rule out a pathogenic role. Computational pr ediction tools and conservation analyses do not provide strong support for or ag ainst an impact to the protein. In summary, the clinical significance of this v ariant is uncertain. -

Inborn genetic diseases

Uncertain:1

Dec 07, 2021

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.18754G>A (p.D6252N) alteration is located in exon 89 (coding exon 89) of the ADGRV1 gene. This alteration results from a G to A substitution at nucleotide position 18754, causing the aspartic acid (D) at amino acid position 6252 to be replaced by an asparagine (N). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Usher syndrome type 2C

Uncertain:1

Jan 12, 2018

Illumina Laboratory Services, Illumina

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score, this variant could not be ruled out of causing disease and therefore its association with disease required further investigation. A literature search was performed for the gene, cDNA change, and amino acid change (if applicable). No publications were found based on this search. This variant was therefore classified as a variant of unknown significance for this disease. -

ADGRV1-related disorder

Uncertain:1

Sep 01, 2024

PreventionGenetics, part of Exact Sciences

Significance: Uncertain significance

Review Status: no assertion criteria provided

Collection Method: clinical testing

The ADGRV1 c.18754G>A variant is predicted to result in the amino acid substitution p.Asp6252Asn. To our knowledge, this variant has not been previously reported in association with retinal disease; however, this variant was identified in one individual in a large cohort of individuals with autism (supplementary data, Zhou et al. 2022. PubMed ID: 35982159). This variant is reported in 0.021% of alleles in individuals of African descent in gnomAD. At this time, the clinical significance of this variant is uncertain due to the absence of conclusive functional and genetic evidence. -

Febrile seizures, familial, 4;C2931213:Usher syndrome type 2C

Uncertain:1

Mar 18, 2022

Fulgent Genetics, Fulgent Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.16

BayesDel_addAF

Benign

-0.37

BayesDel_noAF

Benign

-0.48

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Benign

0.20

T;T;.;.

Eigen

Pathogenic

0.78

Eigen_PC

Pathogenic

0.81

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Uncertain

0.86

.;D;D;D

M_CAP

Benign

0.044

MetaRNN

Benign

0.21

T;T;T;T

MetaSVM

Benign

-0.92

PrimateAI

Uncertain

0.63

PROVEAN

Benign

-1.8

.;N;.;.

REVEL

Benign

0.16

Sift

Benign

0.034

.;D;.;.

Sift4G

Uncertain

0.0080

.;D;.;.

Polyphen

1.0

D;D;.;.

Vest4

0.57

MVP

0.73

MPC

0.26

ClinPred

0.16

GERP RS

5.9

Varity_R

0.20

gMVP

0.69

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.22

Details are displayed if max score is > 0.2

DS_DL_spliceai

0.22

Position offset: 48

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over